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📘 The ocean floor appears

Your boots are on wet mud at Hopewell Rocks, New Brunswick, where a kayak would float a few hours later. The Flowerpot-shaped sandstone pillars rise from exposed flats, their tree-covered tops marking a shoreline that has temporarily moved

3
lessons
~15 min
to learn
Adults
level
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What you’ll learn

  1. A bay that breathesDescribe Fundy’s geography, daily tidal pattern, and lunar timing.Fundy’s long, branching shape hosts two high tides and two low tides each day, with timing and range modulated by the Moon.
  2. Why the water growsExplain how resonance, basin shape, currents, and tidal bores amplify the incoming tide.A natural rocking period close to the Atlantic tide lets repeated pulses reinforce one another, while narrowing water and river channels make the motion visible.
  3. Life on the exposed floorConnect Fundy’s tidal range to erosion, sediment, intertidal life, and safe observation.The retreating tide reveals a productive mudflat ecosystem and sculpted rocks, but the same water returns with strong currents and a strict timetable.

Questions this course answers

Why does the time between high and low tide shift later from day to day?

The Moon’s orbit means a location takes about 24 hours 52 minutes to realign with the Moon, so successive tides arrive later.

What does resonance contribute to Fundy’s extreme tides?

The bay’s natural oscillation is close to the Atlantic tide’s period, so repeated pulses reinforce the motion.

Why can the Bay of Fundy look like two different landscapes in one day?

Fundy’s resonance, narrowing shape, lunar timing, and spring-tide effects produce an unusually large vertical change. That change moves the shoreline across the flats and also powers strong currents.

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